[URL="http://api.tweetmeme.com/share?url=http://sports.espn.go.com/nfl/news/story?id=5122040&campaign=rss&source=NFLHeadlines&service=tinyurl.com&source=espn"][IMG]http://api.tweetmeme.com/imagebutton.gif?url=http://sports.espn.go.com/nfl/news/story?id=5122040&campaign=rss&source=NFLHeadlines[/IMG][/URL]A California safety agency investigating the fatal fall of a San Diego Chargers employee says more than a dozen viewing boxes at Qualcomm Stadium are unsafe and need protective barriers.